144404530 has 16 divisors (see below), whose sum is σ = 261278424. Its totient is φ = 57461760.

The previous prime is 144404527. The next prime is 144404537. The reversal of 144404530 is 35404441.

It can be written as a sum of positive squares in 4 ways, for example, as 95082001 + 49322529 = 9751^2 + 7023^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144404495 and 144404504.

It is not an unprimeable number, because it can be changed into a prime (144404537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35481 + ... + 39340.

Almost surely, 2^144404530 is an apocalyptic number.

144404530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144404530 is a deficient number, since it is larger than the sum of its proper divisors (116873894).

144404530 is a wasteful number, since it uses less digits than its factorization.

144404530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75021.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144404530 is about 12016.8435955537. The cubic root of 144404530 is about 524.6386387067.

Adding to 144404530 its reverse (35404441), we get a palindrome (179808971).

The spelling of 144404530 in words is "one hundred forty-four million, four hundred four thousand, five hundred thirty".